CN116417532A - Automatic edge sealing equipment and method for photovoltaic cell - Google Patents
Automatic edge sealing equipment and method for photovoltaic cell Download PDFInfo
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- CN116417532A CN116417532A CN202111676951.7A CN202111676951A CN116417532A CN 116417532 A CN116417532 A CN 116417532A CN 202111676951 A CN202111676951 A CN 202111676951A CN 116417532 A CN116417532 A CN 116417532A
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- 238000007789 sealing Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000011248 coating agent Substances 0.000 claims abstract description 170
- 238000000576 coating method Methods 0.000 claims abstract description 170
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 23
- 239000011521 glass Substances 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 19
- 238000001723 curing Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000000016 photochemical curing Methods 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 238000013519 translation Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
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- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 10
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- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 229910052709 silver Inorganic materials 0.000 description 4
- 239000004332 silver Substances 0.000 description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- 239000011810 insulating material Substances 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coating Apparatus (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses automatic edge sealing equipment and an edge sealing method for photovoltaic cell pieces, wherein the cell pieces to be treated are horizontally supported on a carrying platform, so that side edge parts to be sealed on the cell pieces are positioned on the outer side of the carrying platform; then, the relative positions of the side edge parts and the coating rotating wheel are adjusted, so that the discharging positions of the coating rotating wheel are correspondingly matched with the positions of the side edge parts; and then driving the battery piece to horizontally move along the length extension direction of the side edge part along the carrying platform, enabling the coating runner to rotate around a rotation center line extending in the vertical direction for discharging, and sequentially applying coating materials on the side edge part along the length direction of the side edge part to realize coating and edge sealing of the side edge part. The automatic edge sealing equipment is simple in structure, occupies small space, is particularly suitable for continuous circulation processing operation in a large batch, and can greatly improve the edge sealing processing efficiency of the battery piece and the processing precision of edge coating and edge sealing.
Description
Technical Field
The invention relates to the field of photovoltaic cell manufacturing, in particular to automatic edge sealing equipment and an edge sealing method for a photovoltaic cell.
Background
The crystalline silicon solar cell usually uses screen printing silver paste, and then a metal electrode is formed by high-temperature or low-temperature sintering to lead out photo-generated carriers, which is also the most widely used metallization method of the crystalline silicon solar cell at present, and the metallization method has simple process and is also the main-stream mass production process at present. In recent years, silicon wafer and battery technology is continuously developed, the production cost of solar batteries is continuously reduced, the proportion of the cost of expensive silver paste in the whole battery cost is continuously increased in the metallization production process, and the width-to-height ratio of silver electrodes is limited by the screen printing technology, so that the further improvement of the battery efficiency is hindered.
In order to further reduce the cost of solar cells and to increase the cell efficiency, the possibility of mass production of metal electrodes of solar cells using electroplating methods which can use cheaper metals such as nickel, copper, etc. to replace silver partially or entirely to achieve cost reduction has also been sought.
The crystalline silicon solar cell is doped with different elements to form an N-type diffusion layer and a P-type diffusion layer to form a PN junction of the cell, voltage difference is generated, and carriers are generated during illumination to realize external power supply of the cell. In order to improve the reliability of the solar cell, the edge of the solar cell adopts an insulation design, and the edge of the cell needs to be protected by an insulation material in the process of forming a metal electrode by an electroplating process, so that metal is prevented from being deposited around the cell. The insulating material can be light-cured ink, heat-cured ink or insulating glue with similar performance. The insulating material coating means may be a non-contact coating, for example CN 201940332U discloses a non-contact edge coating apparatus for solar cell substrates, wherein a substrate support is connected to a conveyor to move the substrate into the grooves of the rollers to receive the coating material. However, the edge coating apparatus cannot meet the takt time required for mass production of solar cells, and when dimensional tolerance of silicon wafers is unavoidable, control of coating accuracy at the time of edge coating is difficult to achieve.
Disclosure of Invention
The invention aims to provide an automatic edge sealing method for a photovoltaic cell slice, which aims to solve one or more problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: an automatic edge sealing method for a photovoltaic cell comprises the following steps:
the method comprises the following steps that (1) a battery piece to be treated is horizontally supported on a carrying platform, the battery piece is provided with a side edge part to be sealed, and the side edge part is positioned on the outer side of the carrying platform;
step (2), adjusting the relative positions of the side edge parts and the coating rotating wheel so that the discharging positions of the coating rotating wheel are correspondingly matched with the positions of the side edge parts;
and (3) enabling the coating runner and the slide platform to move in a relative translational mode along the length extending direction of the side edge part, enabling the coating runner to rotate around a rotation center line extending in the vertical direction for discharging, and sequentially applying coating materials on the side edge part along the length direction of the side edge part to realize coating edge sealing of the side edge part.
Preferably, the step (2) includes a step (2-1) of adjusting the position of the slide platform so that the side edge portion extends along a preset first direction;
in the step (3), the slide platform moves horizontally along the first direction.
Further, in the step (2-1), the slide platform is driven to rotate about a rotation center line extending in a vertical direction, so that the side edge portion extends in the first direction.
Further, the step (2) further includes a step (2-2) of adjusting the position of the coating runner in a preset second direction, wherein the second direction is perpendicular to the first direction.
Still further, during translation of the slide platform in the first direction, the spacing between the discharge position of the coating runner and the side edge portion is maintained at a constant preset value or within a preset range.
Further, the speed of the horizontal movement of the slide platform along the first direction is consistent with or as close as possible to the linear speed of the coating runner during the rotary discharging.
Preferably, the front and rear ends of the side edge portion are respectively formed with a first chamfer portion and a second chamfer portion, and the step (3) includes:
step (3-1), in the process that the first chamfer part passes through the coating runner, the slide platform rotates around a rotation center line extending in the vertical direction, and the coating runner coats and seals the first chamfer part;
step 3-2, the slide platform moves in a translational mode along the first direction, and the coating runner coats and seals the side edge;
and 3-3, rotating the slide platform around a rotation center line extending in the vertical direction in the process that the second chamfering part passes through the coating rotating wheel, and coating and sealing the edge of the second chamfering part by the coating rotating wheel.
Preferably, the coating material is a liquid thermosetting resin or a photo-curable acid-resistant resin soluble in an alkaline solution.
Preferably, the viscosity of the coating material is 50 to 1000cP, preferably 120 to 800cP.
Preferably, the battery piece has two side edge portions that set up relatively, and two the length extension direction of side edge portion is parallel to each other, in step (3), the in-process of slide glass platform horizontal migration, by the branch locate the battery piece translation direction two sets of coating runner of both sides that are different respectively to two side edge portions carry out the coating banding.
Further, in the step (2), each of the two coating runners is position-adjusted according to the position of the side edge portion on the side where the coating runner is located.
Further, the battery piece is provided with two groups of first side parts which are oppositely arranged and parallel, two groups of second side parts which are oppositely arranged and mutually parallel, an included angle between the first side parts and the second side parts is an angle alpha, and the automatic edge sealing method comprises the steps of coating and sealing the two groups of first side parts in steps (1) to (3), rotating the battery piece by the angle alpha, and coating and sealing the two groups of second side parts in steps (1) to (3).
In some embodiments, the angle α between the first side edge portion and the second side edge portion is 90 °.
Further, after the coating and edge sealing of the first side edge part is completed, the battery piece is transferred to another carrying platform, and the coating and edge sealing of the second side edge part is realized.
Further, the automatic edge sealing method further comprises a curing step of transferring the battery piece to a bearing device and keeping the first side edge part and the second side edge part in a suspended state after coating and edge sealing are completed on the first side edge part and the second side edge part of the battery piece, and curing the battery piece.
It is another object of the present invention to provide an automatic edge banding apparatus for photovoltaic cells that solves one or more of the problems of the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme: an automatic edge banding apparatus for a photovoltaic cell, the automatic edge banding apparatus comprising:
the slide device can be horizontally arranged in a moving manner along a first direction and at least comprises a slide platform for bearing the battery piece, and the slide platform can be rotatably arranged around a rotation center line extending in a vertical direction;
the coating device can be horizontally arranged in a moving manner along a second direction, and the first direction and the second direction are mutually perpendicular, wherein the coating device comprises a coating rotating wheel capable of rotating and discharging around a rotation center line extending in the vertical direction, and a feeding mechanism for supplying coating materials to the coating rotating wheel;
and the driving device is used for driving the coating device to move along the second direction.
Preferably, the slide device further comprises a platform adjusting mechanism for driving the slide platform to rotate around the rotation center line so as to adjust the position of the slide platform, and the automatic edge sealing device further comprises a battery piece positioning system for positioning the actual position of the battery piece on the slide platform, wherein the battery piece positioning system is in communication connection with the platform adjusting mechanism and the driving device.
Preferably, the slide glass platform is a negative pressure adsorption platform capable of adsorbing and fixing the battery piece, the battery piece is provided with a side edge part to be sealed, and when the battery piece is positioned on the slide glass platform, the side edge part is positioned on the outer side of the slide glass platform.
Preferably, the outer peripheral portion of the coating runner has an annular groove for accommodating the side edge portion, the coating runner has an accommodating chamber for accommodating the coating material, and a discharge passage communicating the accommodating chamber with the annular groove, the discharge passage having a plurality of discharge passages arranged at intervals in a circumferential direction.
Preferably, the coating runner includes detachably connected upper wheel body and lower wheel body, be provided with a plurality of upper grooves that distribute along circumference interval on the outside week portion of upper wheel body, be provided with a plurality of lower grooves that distribute along circumference interval on the outside week portion of lower wheel body, upper groove with lower groove one-to-one cooperates and forms a plurality of discharge channel.
Preferably, the coating devices are arranged in two groups, and the two groups of coating devices are respectively arranged on two different sides of the slide platform along the first direction.
Preferably, the slide device has more than two groups arranged at intervals along the first direction, and the automatic edge sealing device further comprises a carrying device for transferring the battery pieces on different slide platforms.
Preferably, the automatic edge sealing equipment further comprises a bearing device for bearing the battery piece subjected to edge sealing, a moving device for moving the battery piece from the slide platform to the bearing device, and a curing system for curing the battery piece, wherein the curing system is a hot air dryer or a photo-curing machine or a tunnel furnace.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the automatic edge sealing equipment and the edge sealing method for the photovoltaic cell, the slide glass platform carries the cell to be edge sealed to move in a linear translation mode, and when the side edge of the cell is matched with the coating rotating wheel, the released coating material is applied to the side edge in the rotating process of the coating rotating wheel, so that the coating edge sealing of the side edge is realized. Each moving part in the equipment advances along a set moving path, so that the control operation is convenient, a complex multi-axis robot is not needed, the wrapping and edge sealing of the peripheral side edge part of the battery piece is rapidly realized, the occupied space is small, the processing equipment is particularly suitable for continuous circulation processing operation in a large batch, and the edge sealing processing efficiency and the edge coating and edge sealing processing precision of the battery piece can be greatly improved.
Drawings
FIG. 1 is a schematic perspective view of an automatic edge banding apparatus according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic view of another perspective view of the automatic edge banding apparatus of FIG. 1;
FIG. 4 is a schematic top view of the automatic edge banding apparatus of FIG. 1;
FIG. 5 is a schematic side view of the coating runner of the automatic edge banding apparatus of FIG. 1;
FIG. 6 is an exploded view of the coating runner of FIG. 5;
fig. 7 is a schematic perspective view of the automatic edge sealing device of fig. 1 in cooperation with a battery plate to realize coating edge sealing;
FIG. 8 is a schematic view of another perspective view of the automatic edge banding apparatus of FIG. 7;
FIG. 9 is an enlarged schematic view of portion B of FIG. 8;
FIG. 10 is a schematic top view of the automatic edge banding apparatus of FIG. 7;
FIG. 11 is a schematic cross-sectional view taken along line C-C of FIG. 10;
FIG. 12 is an enlarged schematic view of portion D of FIG. 11;
fig. 13 is a schematic structural view of a battery sheet to be edge sealed.
Detailed Description
The technical scheme of the invention is further described below with reference to the attached drawings and specific embodiments.
Referring to fig. 1 to 6, an automatic edge sealing apparatus for a photovoltaic cell sheet, the automatic edge sealing apparatus comprising: slide device 1, coating device 2, advancing device 3 and drive arrangement 4, wherein: the slide device 1 is arranged to be horizontally movable along a first direction, the slide device 1 at least comprises a slide platform 11 for carrying the battery piece 5 to be edge sealed, the slide platform 11 is arranged to be rotatable along a rotation center line extending in a vertical direction, wherein the first direction is specifically an X direction shown in FIG. 1; the travelling device 3 is used for driving the slide device 1 to integrally travel along a first direction (namely X direction); the coating device 2 is arranged so as to be horizontally movable in a second direction, which is perpendicular to the first direction, here in particular the Y-direction indicated in fig. 1. The coating device 2 includes a coating runner 21 capable of discharging by rotating along a rotation center line extending in a vertical direction, and a feeding mechanism 22 for feeding a coating material to the coating runner 21; the driving means 4 are then used to drive the coating device 2 in a second direction, i.e. the Y-direction.
The carrying platform 11 is specifically a negative pressure adsorption platform capable of adsorbing and fixing the battery piece 5, and a negative pressure access mechanism 12 is arranged below the negative pressure adsorption platform, so that the battery piece 5 is fixedly adsorbed after the battery piece 5 is transferred onto the carrying platform 11, and synchronously moves along with the movement of the carrying platform 11.
The slide device 1 further includes a platform adjustment mechanism (not shown in the figure) for driving the slide platform 11 to rotate around the rotation center line to adjust the position of the slide platform 11, and the platform adjustment mechanism may specifically be a motor disposed below the slide platform 11, where the motor is used to drive the slide platform 11 to rotate around the rotation center line by a specified angle, so as to enable the position of the battery piece 5 located on the slide platform 11 to be adjusted. When the battery piece 5 is supported on the carrying platform 11, the side edge part to be sealed is positioned on the outer side of the carrying platform 11 and is used for being matched with and not contacted with the coating runner 21, so that the coating runner 21 applies coating materials on the side edge part of the battery piece 5 when rotating, and coating sealing treatment on the side edge part is realized.
The automatic edge sealing equipment further comprises a battery piece positioning system (not shown in the figure) for positioning the actual position of the battery piece 5 on the carrying platform 11, wherein the battery piece positioning system at least comprises a camera, the battery piece positioning system is in communication connection with the platform adjusting mechanism and the driving device 4, and the platform adjusting mechanism drives the carrying platform 11 to rotate by an angle required to rotate according to the actual position of the battery piece 5 positioned by the battery piece positioning system, so that the length extending direction of the side edge part to be sealed is parallel to the first direction X; the driving device 4 horizontally moves along the second direction Y by a required distance according to the actual position of the battery piece 5, so that the discharging position of the coating runner 21 and the position of the side edge to be sealed are correspondingly matched, and the tangential direction of the discharging position and the length extending direction of the side edge to be sealed are parallel. In this way, the battery piece 5 is carried by the slide glass platform 11, and in the process that the slide glass device 1 integrally moves horizontally along the first direction X, different positions of the side edge to be sealed on the battery piece 5 sequentially pass through the discharging positions of the coating rotating wheel 2, so that the coating sealing treatment of the whole side edge is realized.
Referring to fig. 5 and 6, the outer peripheral portion of the coating runner 21 has an annular groove 213 for accommodating the side portion of the battery piece 5, the coating runner 21 has an accommodating chamber 215 for accommodating the coating material, and a discharge passage 214 communicating the accommodating chamber 215 with the annular groove 213, the discharge passage 214 having a plurality of axially spaced-apart portions. Here, the discharge openings of all the discharge channels 214 are arranged at uniform intervals on the circumferential side wall of the annular groove 213, so that as uniform a discharge as possible can be achieved when the coating runner 21 rotates. During the rotation of the coating runner 21, the coating material in the accommodating cavity 215 enters the annular groove 213 through the plurality of discharging channels 214 under the action of centrifugal force, and when the battery piece 5 moves horizontally along the first direction X, the side edge part of the battery piece passes through the annular groove 213 and receives the coating material in the annular groove 213, so that the coating edge sealing is realized.
Specifically, the coating runner 21 includes an upper wheel body 211 and a lower wheel body 212 that are detachably connected, a plurality of upper grooves 214a are disposed on an outer peripheral portion of the upper wheel body 211 and distributed at intervals along a circumferential direction, a plurality of lower grooves 214b are disposed on an outer peripheral portion of the lower wheel body 212 and distributed at intervals along a circumferential direction, and when the upper wheel body 211 and the lower wheel body 212 are fixedly engaged with each other to form the coating runner 21, the upper grooves 214a and the lower grooves 214b are engaged with each other in a one-to-one correspondence and form a plurality of discharge channels 214. Thus, the processing of the upper wheel body 211 and the lower wheel body 212 is simpler, the inside of the coating runner 21 and the discharging channel 214 can be conveniently cleaned, and residues caused by difficult cleaning after the coating materials are dried are avoided. The extending direction of the discharge channel 214 is not limited, and may extend in the radial direction of the coating runner 21 as shown in the present embodiment, and may also extend in a spiral curve in other embodiments, so that the coating material in the receiving cavity can flow outward into the annular groove 213 under the centrifugal force when the coating runner 21 rotates.
The upper part of the coating runner 21, specifically, the upper wheel body 211 is further provided with a material injection hole 216 penetrating in the vertical direction, the feeding mechanism 22 is provided with at least a feeding pipe 221, the lower part of the feeding pipe 221 is inserted in the material injection hole 216 in a sealing fit manner and can be rotatably arranged relative to the upper wheel body 211, and the feeding pipe 221 is kept motionless and continuously supplies coating materials into a containing cavity of the coating runner 21 in the process of coating the side edge part of the battery piece 5 by rotating the coating runner 21 around the axis line of the coating runner. In addition, when the coating runner 21 needs to be cleaned, the cleaning material can be injected into the accommodating cavity of the coating runner 21 through the feeding mechanism 22, so that the accommodating cavity, the discharging channel 214 and the annular groove 213 on the coating runner 21 can be automatically cleaned, and the cleaning is very convenient.
The coating material is specifically a liquid thermosetting resin or a photo-curing acid-resistant resin which is soluble in an alkaline solution, and has a viscosity of 50 to 1000cP, preferably 120 to 800cP.
In this embodiment, the two groups of coating devices 2 are respectively disposed on two different sides of the slide platform 11 along the first direction X, so that two side edge portions of the battery piece 5, which are disposed opposite to each other and parallel to each other, can be simultaneously coated with edge sealing treatment, and the processing efficiency is improved. The two sets of coating devices 2 are each driven by a set of driving devices 4, and are each adjusted in position along the second direction Y to cooperate with the side edge portions of the respective sides of the battery pieces 5, while coating and edge sealing processing of the two side edge portions is achieved.
The slide device 1 has two or more groups arranged at intervals upward in the first direction X, and the automatic edge sealing apparatus further includes a handling device (not shown) for transferring the battery pieces 5 on different slide platforms 11. Referring to fig. 1 to 4, in the present embodiment, the slide apparatus 1 has three groups in particular; the coating device 2 comprises two pairs, each pair comprises two groups, the first group of slide glass devices 1 are used for being matched with one pair of coating devices 2 to realize the coating and edge sealing of one pair of side edge parts of the battery piece 5, and the second group of slide glass devices 1 are used for being matched with the other pair of coating devices 2 to realize the coating and edge sealing of the other pair of side edge parts of the battery piece 5. And the third group is used for blanking the battery piece 5 subjected to edge sealing treatment so as to carry out the next treatment.
The automatic edge sealing apparatus further comprises a carrying device (not shown in the figure) for carrying the sealed battery piece 5, a moving device (not shown in the figure) for moving the battery piece 5 from the slide platform 11 to the carrying device, and a curing system (not shown in the figure) for curing the battery piece 5, wherein the curing system is a hot air dryer or a photo-curing machine or a tunnel furnace. The battery piece 5 after the edge sealing treatment is moved to the bearing device by the moving device, and when the battery piece 5 after the edge sealing coating is positioned on the bearing device, the side edge parts of the battery piece 5 after the edge sealing coating are all suspended. The battery piece 5 is sent to a curing system together with the bearing device for drying and curing treatment.
The following describes, in connection with specific embodiments, a method and a process for edge sealing of a battery piece 5 using the above-described automatic edge sealing apparatus:
referring to fig. 13, the battery piece 5 to be edge sealed in this embodiment is square, and has two first side edge portions 5a disposed opposite and parallel to each other, and two second side edge portions 5b disposed opposite and parallel to each other, wherein the two ends of the first side edge portion 5a in the length direction are further formed with a first chamfer portion 5c and a second chamfer portion 5d, respectively, so that the entire circumferential edge of the battery piece 5 needs to be coated with edge sealing treatment.
Referring to fig. 7 to 12, the battery piece 5 to be edge sealed is transferred by a peripheral carrying device and is horizontally arranged on the carrying platform 11 of the first group of carrying devices 1, and is fixedly adsorbed and fixed on the carrying platform 11, and two first side edges 5a to be edge sealed on the battery piece 5 are both positioned on the outer sides of the carrying platform 11.
The battery piece positioning system acquires the actual position of the battery piece 5 on the slide glass platform 11, compares the actual position with a preset value, and transmits corresponding position information to be adjusted to the platform adjusting mechanism and the driving devices 4 on two sides, wherein the platform adjusting mechanism drives the slide glass platform 11 to rotate so that the extending direction of the first side edge 5a is parallel to the first direction X; the driving devices 4 on both sides respectively drive the coating devices 2 on the corresponding sides to move along the second direction Y, so that the discharging positions of the coating runners 21 on both sides correspond to the first side edges 5a on both sides, namely, the first side edges 5a are positioned in the annular grooves 213 on the coating runners 21 along the Y direction and the Z direction.
The whole slide device 1 is driven by the travelling device 3 to travel forward in a translational manner along the first direction X, and the coating devices 2 on two sides are kept motionless at the Y-direction position, so that the interval between the discharging position of the coating runner 21 and the first side edge 5a is kept to be a constant preset value or within a preset range in the translational process of the slide platform 11 along the first direction X. In the process of translating the slide device 1 along the first direction X, the two groups of coating runners 21 are respectively driven to rotate around the axis of the two groups of coating runners, when the first side edge 5a passes through the annular groove 213, coating materials flowing out of the discharging channel 213 into the annular groove 213 are applied to the first side edge 5a, and meanwhile coating edge sealing of the first side edge 5a on two sides is achieved. At the time of coating, the speed of the horizontal movement of the slide stage 11 in the first direction X coincides with or is as close as possible to the linear speed at which the coating runner 21 is rotated to discharge, in particular at the discharge opening of the discharge channel 214 on the coating runner 21, so that the coating material can be applied to the first side portion 5a as uniformly as possible.
In the above process, in the process that the slide device 1 drives the battery piece 5 to translate forward, the first chamfer portion 5c is first matched with the annular groove 213, and at this time, the slide platform 11 is driven to rotate by a small angle, so that the first chamfer portion 5c is coated with an edge seal; then the slide device 1 linearly translates along the first direction to realize edge sealing of the first side edge parts 5a on two sides; finally, the second chamfer 5d mates with the annular groove 213, at which time the slide table 11 is driven to rotate a small angle again, so that the second chamfer 5d is sealed by coating.
Then, the slide device 1 is transported forward to be out of engagement with the first pair of coating devices 2, transferred by an external transporting device and laid on the slide platform 11 of the second group of slide devices 1, and fixed on the slide platform 11 by fixed adsorption, the slide platform 11 rotates by 90 ° again, and the second side edge parts 5b on both sides are suspended outside the slide platform 11. Next, the second pair of coating devices 2 cooperates with the slide device 1 to effect the edge sealing process of the two side second side portions 5b, similarly to the coating edge sealing process of the first side portions 5 a.
Finally, after the edge sealing of the four side edge parts is completed, the four side edge parts are transferred by an external carrying device and horizontally arranged on the slide platform 11 of the third group of slide devices 1, so that the slide devices are transferred to a blanking position, transferred to an external carrying device and sent to a curing system along with the carrying device to be cured, and the edge sealing operation is completed.
In other embodiments, the slide platform 11 with the attached battery piece 5 may be kept still, and the coating device 2 is driven to move in a translational manner along the length extending direction of the side edge portion to be sealed on the battery piece 5, so that the coating runner 21 translates relative to the battery piece 5 while rotating and discharging to realize the coating sealing of the battery piece 5. The slide platform 11 and the coating device 2 can be driven to respectively move in a translational mode so that the slide platform and the coating device generate relative motion.
In other embodiments, only one set of slide devices 1 and one set of coating devices 2 may be configured, where the slide devices 1 only coat edges of one side edge at a time during translation in the first direction X. After coating and edge sealing of one side edge part are completed, the slide glass device 1 is driven to return to the initial position, meanwhile, the rotary platform 11 rotates by a proper angle to enable the other side edge part to be edge sealed to extend parallel to the first direction, and then the slide glass device 1 is driven to translate along the first direction X to achieve coating and edge sealing of the other side edge part to be edge sealed. By means of the circulation, edge sealing treatment on all side edge parts is achieved, and production efficiency is correspondingly reduced compared with that of the mode of the embodiment of the application.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (23)
1. An automatic edge sealing method for a photovoltaic cell slice is characterized by comprising the following steps of:
the method comprises the following steps that (1) a battery piece to be treated is horizontally supported on a carrying platform, the battery piece is provided with a side edge part to be sealed, and the side edge part is positioned on the outer side of the carrying platform;
step (2), adjusting the relative positions of the side edge parts and the coating rotating wheel so that the discharging positions of the coating rotating wheel are correspondingly matched with the positions of the side edge parts;
and (3) enabling the coating runner and the slide platform to move in a relative translational mode along the length extending direction of the side edge part, enabling the coating runner to rotate around a rotation center line extending in the vertical direction for discharging, and sequentially applying coating materials on the side edge part along the length direction of the side edge part to realize coating edge sealing of the side edge part.
2. The automatic edge sealing method of a photovoltaic cell according to claim 1, wherein:
the step (2) comprises the steps of (2-1) adjusting the position of the slide platform so that the side edge part extends along a preset first direction;
in the step (3), the slide platform moves horizontally along the first direction.
3. The automatic edge sealing method of the photovoltaic cell according to claim 2, wherein: in the step (2-1), the slide platform is driven to rotate around a rotation center line extending in a vertical direction, so that the side edge part extends along the first direction.
4. The automatic edge sealing method of the photovoltaic cell according to claim 2, wherein: the step (2) further comprises a step (2-2) of adjusting the position of the coating runner in a preset second direction, wherein the second direction is perpendicular to the first direction.
5. The method for automatically sealing edges of photovoltaic cells according to claim 4, wherein: in the process of translating the slide platform along the first direction, the distance between the discharging position of the coating runner and the side edge part is kept to be a constant preset value or within a preset range.
6. The automatic edge sealing method of the photovoltaic cell according to claim 2, wherein: the speed of the horizontal movement of the slide platform along the first direction is consistent with or as close as possible to the linear speed of the coating runner during the rotary discharging.
7. The automatic edge sealing method of a photovoltaic cell according to claim 1, wherein: the front and rear ends of the side edge part are respectively provided with a first chamfer part and a second chamfer part, and the step (3) comprises:
step (3-1), in the process that the first chamfer part passes through the coating runner, the slide platform rotates around a rotation center line extending in the vertical direction, and the coating runner coats and seals the first chamfer part;
step 3-2, the slide platform moves in a translational mode along the first direction, and the coating runner coats and seals the side edge;
and 3-3, rotating the slide platform around a rotation center line extending in the vertical direction in the process that the second chamfering part passes through the coating rotating wheel, and coating and sealing the edge of the second chamfering part by the coating rotating wheel.
8. The automatic edge sealing method of a photovoltaic cell according to claim 1, wherein: the coating material is liquid thermosetting resin or photo-curing acid-resistant resin which can be dissolved in alkaline solution.
9. The automatic edge sealing method of a photovoltaic cell according to claim 1, wherein: the viscosity of the coating material is 50 to 1000cP, preferably 120 to 800cP.
10. The method for automatically sealing edges of photovoltaic cells according to any one of claims 1 to 9, characterized in that: in the step (3), in the process of horizontally moving the slide platform, two groups of coating rotating wheels respectively arranged on two sides of the battery piece in different translation directions respectively coat and seal the two side edge parts.
11. The method for automatically sealing edges of photovoltaic cells of claim 10, wherein: in the step (2), the positions of the two coating runners are adjusted respectively according to the positions of the side edge parts of the side.
12. The method for automatically sealing edges of photovoltaic cells of claim 10, wherein: the automatic edge sealing method comprises the steps of coating and sealing two groups of first side edges, rotating the battery piece by the angle alpha after coating and sealing the two groups of first side edges, and then coating and sealing the two groups of second side edges by the steps (1) to (3).
13. The method for automatically edge sealing the photovoltaic cell according to claim 12, wherein: the angle α between the first side portion and the second side portion is 90 °.
14. The method for automatically edge sealing the photovoltaic cell according to claim 12, wherein: after the coating and edge sealing of the first side edge part are completed, the battery piece is transferred to the other slide carrying platform, and the coating and edge sealing of the second side edge part are realized.
15. The method for automatically edge sealing the photovoltaic cell according to claim 12, wherein: the automatic edge sealing method further comprises a curing step of transferring the battery piece to a bearing device and keeping the first side edge part and the second side edge part in a suspended state after coating and edge sealing are completed on the first side edge part and the second side edge part of the battery piece, and curing the battery piece.
16. An automatic edge banding device for photovoltaic cells, comprising:
the slide device can be horizontally arranged in a moving manner along a first direction and at least comprises a slide platform for bearing the battery piece, and the slide platform can be rotatably arranged around a rotation center line extending in a vertical direction;
the coating device can be horizontally arranged in a moving manner along a second direction, and the first direction and the second direction are mutually perpendicular, wherein the coating device comprises a coating rotating wheel capable of rotating and discharging around a rotation center line extending in the vertical direction, and a feeding mechanism for supplying coating materials to the coating rotating wheel;
and the driving device is used for driving the coating device to move along the second direction.
17. The automatic edge banding apparatus for photovoltaic cells according to claim 16, wherein: the automatic edge sealing device comprises a slide glass device, a slide glass platform, a slide glass device and a driving device, wherein the slide glass device further comprises a platform adjusting mechanism used for driving the slide glass platform to rotate around a rotation center line to adjust the position of the slide glass platform, the automatic edge sealing device further comprises a battery piece positioning system used for positioning the actual position of the battery piece on the slide glass platform, and the battery piece positioning system is in communication connection with the platform adjusting mechanism and the driving device.
18. The automatic edge banding apparatus for photovoltaic cells according to claim 16, wherein: the slide glass platform is a negative pressure adsorption platform capable of adsorbing and fixing the battery piece, the battery piece is provided with a side edge part to be sealed, and when the battery piece is positioned on the slide glass platform, the side edge part is positioned on the outer side of the slide glass platform.
19. The automatic edge banding apparatus for photovoltaic cells according to claim 18, wherein: the outside week portion of coating runner has and is used for holding the annular groove of side portion, the coating runner has and is used for holding the holding chamber of coating material, and intercommunication the holding chamber with the discharge channel of annular groove, the discharge channel has a plurality of along circumference interval setting.
20. The automatic edge banding apparatus for photovoltaic cells according to claim 19, wherein: the coating runner comprises an upper wheel body and a lower wheel body which are detachably connected, a plurality of upper grooves are formed in the outer peripheral portion of the upper wheel body and distributed at intervals along the circumferential direction, a plurality of lower grooves are formed in the outer peripheral portion of the lower wheel body and distributed at intervals along the circumferential direction, and the upper grooves are matched with the lower grooves in a one-to-one correspondence mode and form a plurality of discharging channels.
21. The automatic edge banding apparatus for photovoltaic cells as set forth in any one of claims 16 to 20 wherein: the coating device is provided with two groups, and the two groups of coating devices are respectively arranged on two different sides of the slide glass platform along the first direction.
22. The automatic edge banding apparatus for photovoltaic cells of claim 21, wherein: the slide glass device is provided with more than two groups which are arranged at intervals along the first direction, and the automatic edge sealing equipment further comprises a carrying device for transferring the battery pieces on different slide glass platforms.
23. The automatic edge banding apparatus for photovoltaic cells of claim 21, wherein: the automatic edge sealing equipment further comprises a bearing device for bearing the battery piece subjected to edge sealing, a moving device for moving the battery piece from the slide glass platform to the bearing device, and a curing system for curing the battery piece, wherein the curing system is a hot air dryer or a photo-curing machine or a tunnel furnace.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111676951.7A CN116417532A (en) | 2021-12-31 | 2021-12-31 | Automatic edge sealing equipment and method for photovoltaic cell |
| PCT/CN2022/141872 WO2023125394A1 (en) | 2021-12-31 | 2022-12-26 | Edge coating apparatus and coating method for photovoltaic cell sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111676951.7A CN116417532A (en) | 2021-12-31 | 2021-12-31 | Automatic edge sealing equipment and method for photovoltaic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116417532A true CN116417532A (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111676951.7A Pending CN116417532A (en) | 2021-12-31 | 2021-12-31 | Automatic edge sealing equipment and method for photovoltaic cell |
Country Status (2)
| Country | Link |
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| CN (1) | CN116417532A (en) |
| WO (1) | WO2023125394A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176469A (en) * | 1987-12-28 | 1989-07-12 | Nissha Printing Co Ltd | Apparatus for coating side surface of thin plate |
| JPH07263474A (en) * | 1994-03-22 | 1995-10-13 | Toshiba Corp | Coating apparatus for semiconductor wafer |
| US8662008B2 (en) * | 2008-02-07 | 2014-03-04 | Sunpower Corporation | Edge coating apparatus for solar cell substrates |
| DE112008003942T5 (en) * | 2008-07-21 | 2011-06-09 | SunPower Corp., San Jose | Device and method for coating edges of non-circular solar cell substrates |
| CN114122160A (en) * | 2021-11-12 | 2022-03-01 | 福建钜能电力有限公司 | Battery piece edge blocking method |
| CN216928600U (en) * | 2021-12-31 | 2022-07-08 | 苏州太阳井新能源有限公司 | Automatic edge sealing equipment for photovoltaic cell |
-
2021
- 2021-12-31 CN CN202111676951.7A patent/CN116417532A/en active Pending
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2022
- 2022-12-26 WO PCT/CN2022/141872 patent/WO2023125394A1/en unknown
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| WO2023125394A1 (en) | 2023-07-06 |
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